KR20040087004A - Navigation system for providing warning restrictedly, apparatus and method for providing warning restrictedly in navigation system - Google Patents

Abstract

PURPOSE: A navigation system for restrictively outputting an alarm, an apparatus and a method for generating an alarm to restrictively output an alarm in the navigation system are provided to prevent the confusion of the driver due to various voice guides by omitting the unnecessary voice guides. CONSTITUTION: An apparatus for generating an alarm to restrictively output an alarm in the navigation system includes a data receiving unit(510), a data analyzing unit(530), a sensor unit(520), a restricted alarm generating unit(540) and an alarm/guide information output unit(550). The data receiving unit(510) outputs the received path guide data. The data analyzing unit(530) determines whether the alarm data is included at the path guide data outputted from the data receiving unit(510) or not. The sensor unit(520) senses the current driving speed of the moving object. The restricted alarm generating unit(540) determines whether the alarm for the alarm data is outputted or not by receiving the path guide data including the alarm data from the data analyzing unit(530) and receiving the current driving speed from the sensor unit(520). And, the alarm/guide information output unit(550) outputs the alarm information when the alarm information is transmitted by determining the output of alarm at the restricted alarm generating unit(540).

Description

NAVIGATION SYSTEM FOR PROVIDING WARNING RESTRICTEDLY, APPARATUS AND METHOD FOR PROVIDING WARNING RESTRICTEDLY IN NAVIGATION SYSTEM}

The present invention relates to a navigation system. In particular, the present invention relates to an apparatus and a method for restrictively outputting a warning in a navigation system.

A variety of moving objects such as ships, aircraft, vehicles, etc. are commonly used by mounting a navigation system (navigation system). The navigation system receives radio waves representing latitude, longitude, altitude, etc. from a plurality of satellites belonging to the GPS (Global Positioning System) to calculate the current position of the moving object. And based on the previously stored map data and displays the map information including the current location. That is, the general navigation device displays various information necessary for driving, such as displaying the current moving speed of the moving object, the moving route set before the driver and the optimum route to the destination by using the information received from the GPS. to provide.

1 is a block diagram of a conventional navigation system. Referring to FIG. 1, a navigation system provides a GPS satellite 10, a mobile terminal (aka mobile phone) 30 that communicates with a wireless network 40, and provides a driver's current location information and driving information to a driver. In order to exchange information with the GPS satellite 10 and the mobile terminal 30 includes a navigation terminal (aka, navigation kit) 20. FIG. 1 illustrates an example in which the navigation terminal 20 and the mobile terminal 30 are mounted in a vehicle.

The navigation terminal 20 receives the position information of the moving object from the GPS satellite 10 and analyzes the position of the moving object. Then, the location information is transmitted to the mobile terminal 30 to provide the driving information of the corresponding location.

The mobile terminal 30 serves as an interface with the driver. For example, when the vehicle driver requests the current location information and the optimum route information to the destination through the mobile terminal 30, the navigation system provides the driver with corresponding information through the display unit and the speaker of the mobile terminal 30. do.

In addition, when the mobile terminal 30 transmits the current position information of the moving object from the navigation terminal 20, the mobile terminal 30 receives the driving information of the corresponding position from the information server 50 connected through the wireless network 40 and provides the driver.

Typically, the information server 50 configures such driving information in a predetermined data format (eg, Route Guidance Information (RGI) data) and delivers the navigation information to the navigation terminal 20 via the mobile terminal 30 and the navigation terminal 20. Analyzes the data format and provides the driver with driving information at the location. At this time, the RGI data 60 refers to information about a link on which the mobile body is currently traveling.

2A and 2B are diagrams showing the data format of the RGI data 60 used in the navigation system. Referring to FIG. 2A, the RGI data 60 used in the conventional navigation system is a link number 61 / travel distance. (62) / Road type (63) / Driving information (64) / Warning flag (FLAG) 65 / Warning data 66 fields.

Each field stores the following information.

The link number field 61 stores an identification number for a link currently being driven by the moving object, the mileage field 62 stores the entire mileage of the link, and the road type field 63 stores the link. Store road types (e.g., local roads, national highways, highways, etc.), and drive information (e.g., turn left at 200 m ahead, sharp curves at 300 m ahead), etc. The warning flag (FLAG) field 65 stores whether or not warning data is included in the corresponding link, and the warning data field 66 contains warning data information (for example, speed limit, icy road warning, etc.) to be provided to the driver. Save it.

The navigation terminal 20 receiving the RGI data 60 transmitted from the information server 50 through the mobile terminal 30 checks the warning flag (FLAG) field 65 of the RGI data 60. As a result, when the warning data is included in the link, the navigation terminal 20 outputs a voice warning through the speaker based on the warning data stored in the warning data field 66. On the other hand, if the warning data is not included in the link, the navigation terminal 20 guides the general route through the display unit and the speaker based on the driving information stored in the driving information field 64 of the RGI data.

At this time, the navigation terminal 20 may itself generate link-specific warning data. For example, the navigation terminal 20 may store a digital map therein, determine the current driving information of the moving body by itself, and generate warning data according to the analysis result of the map information and driving information. will be.

However, in the conventional navigation system, when the warning data is stored in the warning data field 66 of the RGI data 60 or when the warning data is generated according to the analysis result of the map information and the driving information, the conventional navigation system does not depend on the current driving state. The set voice alert was output. For example, in the related art, when the speed limit information is included in the warning data field 66 of the RGI data 60, a voice warning indicating that the speed of the moving body is reduced to a preset speed regardless of the current traveling speed of the moving body is output. . More specifically, when the warning data of 'travel speed: 60 km / h or less' is stored in the RGI data 60, conventionally, even if the current vehicle's traveling speed is 30 km / h or less, the driving speed of the current vehicle is 60 km. Please reduce it to less than / h '. Such a speed limit voice warning is an unnecessary voice warning for a driver located in an area where the traffic flow is delayed, but rather has an inconvenience in planting the driver.

In the case of a conventional navigation system that outputs a voice warning to a driver in an area where an unmanned speed camera is located, the voice warning is unconditionally output even when the driver drives below a specified speed without speeding. Therefore, in some cases, the driver may be surprised or embarrassed by the voice warning and suddenly brake, causing a risk of collision.

In addition, conventionally, voice warnings limited to a specific weather / season / time, such as “sliding attention when snow / rain” and “slow deceleration at night” are outputted collectively regardless of the current weather / season / time. That is, by outputting a voice warning limited to a specific weather / season / time without considering current weather / season / time, it does not provide the driver with desirable driving information but causes deterioration of the driving environment due to unnecessary voice warning. There was this.

As such, conventionally, all voice warnings for the corresponding link are output without considering the traveling speed of the moving object and the current weather / season / time, and the like. , Residual distance, etc.) have often occurred. Such duplicate voice guidance has a disadvantage of causing confusion to the driver.

The present invention has been made to solve such a conventional problem, the first object of the present invention by omitting unnecessary voice guidance in consideration of the actual driving environment of the driver various voice guidance (for example, voice warning, direction indication, remaining distance The present invention provides a warning generating device and a method for preventing confusion of a driver due to duplication.

It is a second object of the present invention to provide a warning generating device and method for improving the driving environment of a driver by generating a warning in consideration of the actual driving environment of the driver (eg, driving speed, actual season / weather / time information, etc.). .

It is a third object of the present invention to provide a warning generating device and method for effectively utilizing a navigation system by restricting output of voice guidance to a driver.

A fourth object of the present invention is to provide a navigation system that outputs a limited warning including the warning generating device.

1 is a block diagram of a conventional navigation system,

2A and 2B are diagrams illustrating a data format of RGI data used in a navigation system;

3A is a flowchart of a navigation system for restrictively outputting a warning according to a first embodiment of the present invention;

3B is a flowchart of a navigation system for restrictively outputting a warning according to a second embodiment of the present invention;

3C is a flowchart of a navigation system for restrictively outputting a warning according to a third embodiment of the present invention;

4A is a schematic configuration diagram of a warning generating device outputting a warning in accordance with the first to third embodiments of the present invention;

Figure 4b is a view showing an example of the storage form of the warning generation conditions stored in the warning generation device of the present invention,

5A and 5B are flowcharts of a warning generating device for restrictively outputting warnings according to the first to third embodiments of the present invention.

In order to achieve the above objects, an alert generating apparatus provided by the present invention includes a data receiver for receiving and outputting path guidance data, current weather information, and current time information from the outside, and warning data in the path guidance data output from the data receiver. The data analysis unit to determine whether the included, the sensor unit for detecting the current traveling speed of the moving object, the route guidance data including the warning data from the data analysis unit received by the warning generation conditions previously stored for each type of warning data Limited warning generation unit for determining whether or not the warning output for the warning data, and warning / guidance information output unit for outputting the warning information when the warning output is determined by the warning output is determined in the limited warning generation unit do.

The warning generation method provided by the present invention provides a first step of receiving route guidance data and a second step of determining whether or not the warning data is included in the route guidance data received in the first step. And a third step of determining the type of the warning data if the warning data is included in the path guidance data, and a warning generation condition previously stored for each type of warning data and warning data determined in the third step. And a fourth step of determining whether to output a warning on the warning data, and a fifth step of outputting a warning corresponding to the warning data when the warning output is determined in the fourth step.

In addition, the navigation system provided by the present invention to achieve the above object is characterized in that it comprises a warning generating device for outputting a limited warning based on the actual driving environment information of the moving object.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this case, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

3A to 3C are flowcharts of a navigation system for restrictively outputting a warning according to the first to third embodiments of the present invention. FIG. 3A illustrates an example of a processing procedure for restrictively outputting a warning with only its own information in a standalone type navigation system, and FIG. 3B illustrates a route information and a wireless network calculated in a standalone type navigation system. An example of a processing procedure for outputting a warning based on received weather / traffic information is shown. FIG. 3C illustrates a processing procedure for outputting warning in a server-client type navigation system. An example is shown.

Referring to FIG. 3A, a processing procedure for restrictively outputting a warning according to a first embodiment of the present invention will be described. In the example of FIG. 3A, a processing procedure using a navigation terminal 100 including a digital map and an apparatus for detecting speed / position information of a moving object is described.

In this case, when the user inputs the current location information detected by the destination and the GPS receiver to the mobile terminal 200 to obtain the optimal path information to the predetermined destination, the mobile terminal 200 inputs the destination information to the navigation terminal 100. (S105). Then, the navigation terminal 100 detects the current location information using a location tracking device (for example, a GPS receiver, etc.) provided therein, and then uses the previously stored digital map to save the current location information. In step S105, the route to the transmitted destination is calculated (S110) and RGI data is generated based on the route calculation result (S115). At this time, an example of the generated RGI data structure is as illustrated in FIG. 2A.

The navigation terminal 100 compares the driving information included in the RGI data with the actual driving information to determine whether to generate a warning (S120). To this end, the navigation terminal 100 should have a preset warning generation condition, and a warning generation device for controlling the warning output based on the warning generation condition and the actual driving information of the moving object (eg, traveling speed, etc.) is limited. It should be built in.

For example, when the RGI data includes the speed limit-related warning data, the navigation terminal 100 compares the speed limit limited by the warning data with the traveling speed of the moving object and the speed limit so that the current traveling speed of the moving object is the speed limit. It is determined that the navigation terminal 100 outputs a warning only when it is faster. More specifically, when the warning data of 'travel speed: 60 km / h or less' is stored in the RGI data, it is determined that the navigation terminal 100 outputs a warning only when the driving speed of the current moving object is 60 km / h or more.

In addition, when the RGI data includes the speed limit related warning data, the warning generation condition may be set separately so that the warning is generated only when the condition is satisfied. For example, if the warning condition regarding the speed limit is 10% faster than the speed limit of the current moving object, the navigation terminal 100 checks the speed of the current moving object and the driving speed of the current moving object is higher than the speed limit. It is judged to output warning only when it is faster than 10%.

At this time, in order to determine the current traveling speed of the moving object, the navigation terminal 100 preferably uses a speed sensor mounted at a predetermined position of the moving object.

As illustrated above, the navigation terminal 100 that determines whether an alarm occurs in the process S120 transmits the general path guidance and warning guidance data to the mobile terminal 200 based on the determination result (S125). That is, when it is determined that the warning is generated as a result of the check (S120), the navigation terminal 100 transmits the warning data to the mobile terminal 200 together with the general path guide information. Then, the mobile terminal 200 outputs the general path guide and warning guide information in response (S135). However, since the warning data can be output using any one or more data of audio and image, the image data of the warning guide information is output through the mobile terminal 200 in the process (S125), and the voice data of the warning guide information is output. Output from the navigation terminal 100 (S130).

If it is determined that the warning is not generated as a result of the checking of the process (S120), the navigation terminal 100 does not output the warning and only general path guide information (eg, direction indication, remaining distance, etc.) to the mobile terminal 200. send.

3B is a diagram illustrating a processing procedure for restrictively outputting a warning according to a second embodiment of the present invention. In the second embodiment of the present invention, the navigation terminal 100 performs route calculation for optimal path detection using a digital map stored therein, and the external server 400 through the mobile terminal 200 ( For example, the server receives the current weather and traffic information from a server for managing real-time weather and traffic information, and outputs a warning reflecting the weather and traffic information in a limited manner.

Referring to FIG. 3B, a processing procedure for restrictively outputting a warning according to the second embodiment of the present invention is as follows.

First, the mobile terminal 200 transmits the destination and current location information to the navigation terminal 100 at the request of the user (S205), and the navigation terminal 100 calculates a route using the information (S210). Is similar to the example shown in FIG. 3A.

However, in the second embodiment of the present invention illustrated in FIG. 3B, the navigation terminal 100 is broadcasted from an external server 400 (eg, a server managing real time weather and traffic information) through the mobile terminal 200. Lose further includes the process of receiving real-time weather and traffic information (S210 to S215). This is to limit the output of warnings reflecting real-time weather and traffic information for the region including the optimal route and current location information.

The navigation terminal 100 receiving the destination information from the mobile terminal 200 in step S205 monitors the start of navigation and manages the external server 400 (eg, real-time weather and traffic information) through the mobile terminal 200. Weather information and traffic information from a server, etc.) (S210 and S215). The weather information and traffic information are broadcasted information from an external server 400, and the navigation terminal 100 receives the information and uses the calculated route from the current location to the destination. That is, the navigation terminal 100 generates RGI data by adding the weather information and traffic information to the route calculation result (S220 and S225). An example of the RGI data structure generated at this time is illustrated in FIG. 2A.

In addition, the navigation terminal 100 checks whether or not a warning is to be generated using the real-time weather / traffic information included in the RGI data generated in step S225 (S230). That is, the navigation terminal 100 determines whether to generate a warning by comparing the preset warning occurrence condition and the actual driving environment information. To this end, the navigation terminal 100 should have a built-in warning generating device that stores a preset warning generating condition and controls to output a warning based on the warning generating condition.

For example, if the RGI data includes warning data related to the speed limit, the navigation terminal 100 determines whether to generate a warning by comparing the speed limit limited by the warning data and the traveling speed of the moving object. As described above, an example of a case in which the navigation terminal 100 controls the warning output based on the speed limit-related warning data included in the RGI data is similar to that mentioned in the description of FIG. 3A. Therefore, in the description with reference to FIG. 3B, an example of a processing method when the speed limit related warning data is included in the RGI data is omitted.

On the other hand, the navigation terminal and the mobile terminal can be configured integrally. For example, a communication module may be built in the navigation terminal so as to be configured to transmit / receive various information from the information center or an external server.

In addition, a mobile terminal as a medium for transmitting / receiving various information with an external information center is just one embodiment, and various communication modules may be applied. For example, it is possible to transmit / receive using a communication module capable of receiving a frequency modulation (FM) broadcast frequency or a DSRC (**** Full Name description request ****) . Therefore, the medium for transmitting / receiving information from the outside is not limited to the mobile communication terminal.

On the other hand, if the warning data stored in the RGI data is a warning limited to a specific weather / season / time, such as 'slip attention when snow / rain', 'deceleration at night', etc. navigation terminal 100 is the current weather / season / Checking the time information determines that the warning is output only when the current weather / season / time information matches the weather / season / time for generating the warning data. To this end, the navigation terminal 100 receives the current time information from the mobile terminal 200, determines the current season and time based on the time information, and uses the current weather information transmitted through the mobile terminal 200 to determine the current time. It is desirable to determine the weather information.

To this end, the navigation terminal 100 must store a predetermined warning occurrence condition and output a warning based on the warning occurrence condition and the actual driving environment information (eg, driving speed, weather information, traffic information, etc.) of the moving object. It should have a built-in warning device that controls it.

As illustrated above, the navigation terminal 100 that determines whether an alarm occurs in the process S240 transmits the general path guidance and warning data to the mobile terminal 200 based on the determination result (S245). That is, when it is determined that the warning is generated as a result of the check (S240), the navigation terminal 100 transmits the warning data to the mobile terminal 200 together with the general path guidance information. Then, the mobile terminal 200 outputs general path guide and warning guide information in response (S255). However, since the warning data can be output using any one or more of audio and image data, the image data of the warning guide information is output through the mobile terminal 200 in the step S245, and the voice data of the warning guide information is output. Output from the navigation terminal 100 (S250).

If it is determined that the warning is not generated as a result of the check (S240), the navigation terminal 100 does not output the warning and only general path guide information (eg, direction indication, remaining distance, etc.) to the mobile terminal 200. send.

3C is a diagram illustrating a processing procedure for restrictively outputting a warning according to a third embodiment of the present invention. In the third embodiment of the present invention, the navigation terminal 100 receives route guidance information and current weather information from an external information center 300 from a current location to a destination and outputs a warning reflecting the weather and traffic information in a limited manner. do.

Referring to FIG. 3C, when the user inputs the current location information detected by the destination and the GPS receiver to the mobile terminal 200 to obtain the optimal path information to the predetermined destination, the mobile terminal 200 determines the destination and the current location. The information is transmitted to the information center 300 (S305). Then, the information center 300 uses a traffic information and weather information transmitted from an external server 400 (for example, a server for managing real-time weather and traffic information, etc.) (S310) and a starting point (for example, current) input by the user. Location) to the destination (S315), and RGI data is generated (S320). At this time, the information center 300 may include the current weather information transmitted from the external server 400 in the RGI data and transmit the same. 2B shows a data format of RGI data 60A including the weather information.

The information center 300 generating the RGI data as described above transmits the RGI data to the navigation terminal 100 via the mobile terminal 200 (S325 and S330).

Then, the navigation terminal 100 analyzes the received RGI data to determine whether or not to generate a warning (S335). That is, the navigation terminal 100 compares a preset warning occurrence condition with actual driving environment information (eg, driving speed, weather information, traffic information, etc.) and determines whether to generate a warning. To this end, the navigation terminal 100 should have a built-in warning generating device that stores a preset warning generating condition and controls to output a warning based on the warning generating condition.

For example, when the warning data included in the RGI data is speed limit information, the navigation terminal 100 compares the speed limit information in the speed limit information with the current travel speed of the moving object to determine the speed limit information of the moving object. It is determined that the warning is output only when the speed is faster than the speed limit (hereinafter referred to as 'limit speed'). More specifically, when the warning data 'Running speed: 60km / h or less' is stored in the RGI data 60, the navigation terminal 100 is the current vehicle in the region only when the current vehicle's traveling speed is 60km / h or more Reduce the speed of travel below 60 km / h. That is, when the warning data of 'travel speed: 60 km / h or less' is stored as described above, if the current traveling speed of the moving object is 60 km / h or less, the navigation terminal 100 determines that the warning is not output.

In addition, when the warning data is a speed limit warning, a warning occurrence condition may be set separately so that the warning is generated only when the condition is satisfied. For example, if a warning occurrence condition is stored that the driving speed of the current moving object is 10% faster than the speed limit, the navigation terminal 100 stores the warning data related to the speed limit in the RGI data 60 and the current moving object. Check the speed of the vehicle and output a warning such as 'Reduce the current vehicle's driving speed below the speed limit (e.g. 60km / h)' only if the current speed of the vehicle is 10% faster than the speed limit. I judge it. For example, if the warning occurrence condition is 'the driving speed of the current moving object is more than 10% faster than the speed limit' and the warning data 'running speed: 60 km / h or less' is stored in the RGI data, the navigation terminal 100 Is determined to output a warning only when the running speed of the current vehicle exceeds 66km / h, it is determined that the warning is not output when the running speed of the current vehicle is less than 66km / h.

At this time, in order to determine the current traveling speed of the moving object, the navigation terminal 100 preferably uses a speed sensor mounted at a predetermined position of the moving object.

On the other hand, if the warning data stored in the RGI data is a warning limited to a specific weather / season / time, such as 'slip attention when snow / rain', 'deceleration at night', etc. navigation terminal 100 is the current weather / season / Checking the time information determines that the corresponding warning is output only when the current weather / season / time information matches the weather / season / time for generating the warning data. To this end, the navigation terminal 100 receives the current time information from the mobile terminal 200 and determines the current season and time based on the time information. In addition, the navigation terminal 100 preferably determines the current weather information based on the weather information included in the RGI data.

In the example of FIG. 3C, the case where the information center 300 includes current weather information when generating RGI data has been described. However, after the mobile terminal 200 accesses a separate weather server using a wireless network, the mobile terminal 200 may determine current weather information using weather information received from the weather server.

The navigation terminal 100 confirms whether or not the warning occurs in the process (S335) and transmits the general path guidance and warning data to the mobile terminal 200 according to the result (S340). That is, if the actual driving environment information satisfies the preset warning occurrence condition as a result of checking in step S335, the navigation terminal 100 determines that the warning is to be generated and the warning data together with the general path guide information to the mobile terminal 200. And delivers to (S340). Then, the mobile terminal 200 outputs general path guide and warning guide information in response (S345). However, since the warning data can be output using any one or more of audio and image data, the image data of the warning guide information is output through the mobile terminal 200 in the step S345, and the voice data of the warning guide information is output. Output from the navigation terminal 100 (S350).

If the warning data is not transmitted from the navigation terminal 100, the mobile terminal 200 provides general path guidance (eg, direction indication, remaining distance, etc.) without outputting a warning.

4A is a schematic diagram of a warning generating device 500 outputting a warning in accordance with the first to third embodiments of the present invention. Such a warning generating device 500 is preferably embedded in the navigation terminal 400.

3A to 3C and 4A, the alert generator 500 according to an exemplary embodiment of the present invention includes a data receiver 510, a sensor 520, a data analyzer 530, and a limited alert generator 540. ) And a warning / guide information output unit 550.

The data receiver 510 is configured to determine the actual driving environment information (eg, driving speed, weather information, and traffic information) of the moving object from outside by using RGI data and current time information (eg, year / month / day / hour / minute / second). Etc.). The data receiver 510 may determine current time and season information based on the current time information. Meanwhile, when receiving the RGI data including the weather information, the data receiver 510 analyzes the RGI data to determine the current weather information. Otherwise, the data receiver 510 receives the current weather information from a separate weather server. 2A and 2B illustrate the data format of such RGI data. FIG. 2A illustrates an example of a data format of RGI data that does not include weather information, and FIG. 2B illustrates an example of a data format of RGI data that includes weather information. Since these data formats are specifically mentioned in the description with reference to FIG. 2A, the description of the data format of the RGI data is omitted.

Meanwhile, as in the example of FIG. 3C, when the navigation terminal 100 receives RGI data generated in the information center 300, the data receiver 510 receives RGI data and current time information from the mobile terminal 200. When the RGI data is generated in the navigation terminal 100 as in the example of FIGS. 3A and 3B, the data receiver 510 receives the RGI data from the navigation terminal 100 and the current time information is embedded in the mobile terminal 200. Received from a generated time generation module (eg, a Real Time Clock (RTC)). In particular, as in the example of FIG. 3B, when the navigation terminal 100 generates an alert reflecting RGI data generated by itself and real-time weather / traffic information, the data receiver 510 receives the weather transmitted from the external server 300. Information is received through the mobile terminal 200.

Therefore, when the weather information is not included in the RGI data, the data receiver 510 of the warning generator 500 embedded in the navigation terminal 400 receives the weather information from a separate weather server through the mobile terminal 100.

The sensor unit 520 detects a current traveling speed of the moving object. The sensor unit 520 may be configured to be included in the warning generator 500 or may use a separately configured traveling speed sensor.

The data analyzer 530 analyzes the RGI data received by the data receiver 510 to determine whether the warning data is included in the RGI data. As a result of the determination, when the warning data is included in the RGI data, the data analysis unit 530 transmits the warning data to the limited warning generating unit 540, otherwise the data analysis unit 530 is driven in the RGI data. Based on the information, general warning information (eg, direction indication, remaining distance, etc.) is output to the warning / guide information output unit 550.

The limited warning generator 540 determines whether to output a warning on the warning data transmitted from the data analyzer 530 according to the warning generation condition previously stored for each type of warning data. The storage form of the warning generation condition stored in the limited warning generation unit 540 is as shown in Figure 4b.

In FIG. 4B, numerical values described in each item represent a reduction ratio of a preset speed limit. For example, if snow falls on a curved road with a speed limit of 100 km / h, the limited warning generator 540 refers to the warning condition illustrated in FIG. 4B, and the actual driving speed is '2' of the preset speed limit. It is determined that the warning is output only when the speed decelerated by 10 'is exceeded (e.g., 80 km / h).

In addition, it may be determined whether to generate a warning in consideration of weather, season and time. For example, if the accident-prone region passes during the daytime in the snowy winter season and the speed limit of the road is 80 km / h, the warning rate of 2/10 of the occurrence of snowfall in the accident-prone region and the winter time in FIG. The final warning rate is 4/10 plus the warning rate of 1/10 and daytime warning rate of 1/10. The speed limit of the road is 80km / h, so the final warning rate of 4/10 Multiplying the speed limit generates an alarm only when the vehicle travels at a speed of 32 km / h or more. Here, the table value of FIG. 4B is only an example, and factors defining the speed limit may be configured in various ways in addition to weather, season, time, and road state information, and a warning occurrence ratio may be applied differently.

On the other hand, the limited warning generating unit 540 has to know the actual driving environment information of the moving object to determine whether or not to output a warning on the warning data based on the warning generating conditions, for this purpose, the limited warning generating unit 540 is a sensor The current traveling speed of the moving object is transmitted from the unit 520 or the separate traveling speed sensor, and the current weather and time information is received from the data receiver 510 based on these information (current driving speed, current weather and time information). The actual driving environment information of the moving object is determined.

The warning / guidance information output unit 550 outputs the warning information transmitted from the limited warning generation unit 540 to the driver, and outputs the general path guide information transmitted from the data analysis unit 530 to the driver.

5A and 5B are process flow diagrams of the alert generating apparatus 500 illustrated in FIG. 4A according to the first and second embodiments of the present invention.

Referring to Figures 4a and 5a the process of the warning generating device 500 will be described. First, when the data receiver 510 receives the RGI data (S210), the data analyzer 530 analyzes the RGI data to determine whether the warning data is included in the RGI data (S220). When the warning data is included in the RGI data as a result of the analysis (S220), the limited warning generation unit 540 generates a limited warning for the warning data included in the RGI data in a pre-stored warning generation condition (S240). That is, it is determined whether a warning is output for the warning data included in the RGI data based on a pre-stored warning generation condition, and a limited warning is generated by the result. When the warning data is not included in the RGI data as a result of the analysis in step S220, general path guidance (eg, direction indication, remaining distance, etc.) is performed (S250).

The limited warning generating process S240 will be described in more detail with reference to FIGS. 4A and 5B as follows.

If it is determined that the warning data is included in the RGI data as a result of the analysis (S220 of FIG. 5A), the limited warning generating unit 540 checks the type of the warning data (S305). If the result of the check (S305) the warning data is a warning according to the weather condition (S310), the limited warning generating unit 540 checks the current weather information received through the data receiving unit 510 (S315). Then, the warning is generated only when the current weather information is a weather condition for warning (S320, S325).

For example, if the warning data is limited to a specific weather condition, such as 'sliding attention when snowing or raining', a warning is output only when the current weathering conditions are snowy or rainy by the processes S315 to S325. Do it. At this time, the type of warning that is output includes any one or more of sound or image.

If the result of the check (S305) is the warning data according to the time / season (S330), the limited warning generator 540 confirms the current time and season by the current time information received through the data receiver 510. (S335). For example, predetermined reference information for identifying a season from current time information is set in advance, and the current season is confirmed by the reference information. In addition, the corresponding alarm is generated only when the current time / season is a time / season for generating an alarm (S340 and S345).

For example, a warning about a road situation occurring only in a specific season (eg, winter) such as 'ice road' may output a warning corresponding to only that season. In addition, a road situation occurring only at a specific time (eg, at night) outputs a warning corresponding only to a time corresponding to a night as a result of the determination of the current time. At this time, since the sun setting time is different for each season, it is preferable to set and use the seasonal day / night judgment reference timetable.

If the result of the check (S305) the warning data is the speed limit warning (S350), the limited warning generating unit 540 determines whether the current weather and season satisfy the preset speed limit reset condition to determine the preset speed limit. If it is necessary to reset the preset speed limit (S355, S360). For example, check the current weather conditions and reset the speed limit to 80% of the preset speed limit in case of snow or rain. Therefore, if the speed limit is' 100 km / h 'in good weather conditions, the speed limit is reset to '80 km / h' in the case of snow or rain. Meanwhile, the limited warning generator 540 may generate a corresponding warning only when the current speed is faster than the speed limit by a predetermined ratio or more. For example, when the warning speed is to be output only when the current speed is 20% or more faster than the speed limit, the speed limit is reset to 120% of the preset speed limit in step S360. That is, when the preset speed limit is '100 km / h', the speed limit may be reset to '120 km / h' so as to generate a corresponding warning only when the current speed is 120 km / h or more.

In addition, a warning (eg, deceleration guide, etc.) is generated only when the current traveling speed transmitted through the sensor unit 520 is greater than the speed limit (S365 and S370).

At this time, in order to prevent the driver from unintentionally speeding, if the current speed is close to the speed limit, a preliminary warning such as 'adjust the speed because the speed is close to the speed limit' may be generated (S375, S380). ). For example, when the speed limit is' 100 km / h 'and the current speed is 80% or more of the speed limit, the preliminary warning is output when the current speed is '80 km / h' or more.

The occurrence conditions of the warning according to the type of warning data as described above is merely an example for explaining the present invention, and can be modified and executed in addition to the type of warning data illustrated in FIG. 5B.

For example, road conditions occurring at specific times / seasons may omit or generate voice guidance regardless of speed limit, or skip voice announcements regardless of speed limit in certain weather conditions. It may be generated, and if the temperature is above / below a certain speed, the speed limit may be changed to warn in advance of the speed limit. That is, the alarm generation condition according to the type of warning data can be freely set and changed by the selection of the system operator.

In the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be defined by the described embodiments, but should be determined by the equivalent of claims and claims.

In the present invention as described above, when outputting the voice guidance in the navigation system, by omitting unnecessary voice guidance in consideration of the actual driving environment of the driver by overlapping a variety of voice guidance (for example, voice warning, direction indication, remaining distance, etc.) There is an advantage that can prevent the driver's confusion. In other words, it is possible to reduce the discomfort of the driver due to unnecessary voice guidance by omitting unnecessary voice guidance. In addition, the present invention can improve the driver's driving environment by generating a voice warning in consideration of the driver's actual driving environment (eg, driving speed, actual season / weather / time information, etc.) when outputting the voice warning in the navigation system. There is this. In addition, the present invention has the advantage that it is possible to utilize the navigation system more effectively by outputting a limited voice guidance to the driver.

Claims (23)

In the warning generating device for generating a warning of the navigation system, A data receiver for receiving and outputting route guidance data; A data analysis unit for determining whether warning data is included in the path guide data output from the data receiver; Sensor unit for detecting the current traveling speed of the moving object, Receives the path guidance data including the warning data from the data analysis unit and receives the current running speed from the sensor unit to determine whether to output the warning for the warning data by the pre-stored warning generation conditions for each type of warning data Alert generation section, And a warning / guidance information output unit for outputting the warning information when the warning output is determined in the limited warning generation unit and the warning information is transmitted. The method of claim 1, wherein the data receiving unit And generating and receiving path guidance data including the current weather information. The method of claim 1, wherein the data receiving unit Alert generation device characterized in that for receiving and outputting the route guidance data including the current time information. The method of claim 1, wherein the data receiving unit Warning generation device characterized in that for receiving and outputting the route guidance data including the road information indicating the speed limit and dangerous information. The method of claim 1, wherein the sensor unit And a speed detecting sensor mounted at a predetermined position of the moving object and detecting a traveling speed of the moving object. The method of claim 1, wherein the sensor unit The warning generating device, characterized in that for receiving the traveling speed of the moving object from a speed sensor for mounting the predetermined position of the moving object to detect the traveling speed of the moving object. The method of claim 1, wherein the limited warning generating unit Receive route guidance data including current time and weather information from the data receiver and receive the current traveling speed of the moving object from the sensor unit to determine actual driving environment information of the moving object, The type of warning data transmitted from the data analysis unit is grasped and the warning occurrence condition corresponding to the type is compared with the actual driving environment information, and only when the actual driving environment information satisfies the warning occurrence condition corresponding to the warning data. And a warning output device for outputting warning information to the warning / guide information output unit. According to claim 1, wherein the warning / guide information output unit When the path guidance data that does not include the warning data from the data analysis unit, the warning generation device, characterized in that for outputting the general path guide information based on the path guidance data. In the warning method for generating a warning of the navigation system, A first process of receiving route guidance data; A second step of determining whether or not the warning data is included in the path guide data received in the first step; A third step of determining the type of warning data when the warning data is included in the route guidance data; A fourth process of determining whether to output an alert for the alert data based on a pre-stored alert occurrence condition for each kind of alert data and alert data determined in the third process; And a fifth step of outputting a warning corresponding to the warning data when the warning output is determined in the fourth step. The method of claim 9, wherein the first process is Alert generation method characterized in that for receiving the route guidance data including the current weather information. The method of claim 9, wherein the first process is Alert generation method characterized in that for receiving the path guide data including the current time information. The method of claim 9, wherein the first process is Alert generation method characterized in that for receiving the route guidance data including road information indicating the speed limit and dangerous information. The method of claim 9, wherein the fourth process Step 4-1 of receiving the current weather and time information and the current driving speed of the moving object to determine the actual driving environment information of the moving object; Step 4-2 of comparing the warning occurrence condition corresponding to the type of warning data determined in the third step with the actual driving environment information; And a 4-3 step of determining a warning output only when the actual driving environment information satisfies a warning occurrence condition corresponding to the warning data as a result of the comparison of step 4-2. The method of claim 9, And a sixth step of outputting general route guide information based on the route induction data when the warning data is not included in the route induction data received in the first process. In a navigation system, Navigation system comprising a warning generating device for outputting a limited warning based on the actual driving environment information of the moving object. The method of claim 15, wherein the warning device A data receiver which receives and outputs route guidance data, current weather information and current time information; A data analysis unit for determining whether warning data is included in the path guide data output from the data receiver; Sensor unit for detecting the current traveling speed of the moving object, A limited warning generation unit for receiving path guidance data including warning data from the data analysis unit and determining whether the warning output is output for the warning data according to previously generated warning generation conditions for each type of warning data; And a warning / guidance information output unit for outputting the warning information when the warning output is determined in the limited warning generation unit and the warning information is transmitted. 17. The apparatus of claim 16, wherein the data receiving unit Navigation system, characterized in that for receiving and outputting the route guidance data including the current weather information. 17. The apparatus of claim 16, wherein the data receiving unit Alert generation device characterized in that for receiving and outputting the path guide data including the current time information. 17. The apparatus of claim 16, wherein the data receiving unit Warning generation device characterized in that for receiving and outputting the route guidance data including the road information indicating the speed limit and dangerous information. The method of claim 16, wherein the sensor unit A navigation system comprising a speed sensor mounted on a predetermined position of the moving object for detecting the traveling speed of the moving object. The method of claim 16, wherein the sensor unit A navigation system, characterized in that receiving the traveling speed of the moving object from a speed sensor for mounting at a predetermined position of the moving object to detect the traveling speed of the moving object. The method of claim 16, wherein the limited alert generating unit Receive route guidance data from the data receiver and receive the current traveling speed of the moving object from the sensor to determine the actual driving environment information of the moving object, The type of warning data transmitted from the data analysis unit is grasped, and the warning occurrence condition corresponding to the type is compared with the actual driving environment information. Determining a warning output and outputting warning information to the warning / guide information output unit. The method of claim 16, wherein the warning / guide information output unit The navigation system, characterized in that for outputting the general route guidance information based on the route guidance data when the route guidance data that does not include the warning data from the data analysis unit.